I think that's taking speculation too far. More likely it'll just be as it's always been -- various shows and movies that share the same continuity and occasionally reference each other to some extent. And I doubt they're any more likely to reboot everything from scratch than any previous Trek creators have been. Roddenberry intended TNG to be a soft reboot keeping only the parts of TOS continuity he liked, but later producers brought it all together as a continuous whole, and everyone since has followed that precedent. Even the Kelvin timeline is explicitly an alternate timeline and a direct continuation of Spock Prime's life, rather than a complete reboot. They could have rebooted fully, but they chose not to because the unity of the canon is important to fans, as well as to creators who are themselves fans. I see no reason to expect any of that to change in the future. Personally, I'd be happy to see a from-scratch reboot that rebuilt the universe from the ground up, but I don't expect anyone is likely to make one.
Besides, part of the reason Kelvin was split off into an alternate reality was because the movies at the time were from a separate production company from the shows, so it was best for legal and business reasons to keep them separate. That is no longer the case; any new shows or films will still be from the same company that made all the previous shows. Okay, it's merged with Skydance now, but that's happened before with Gulf + Western, Viacom, CBS, etc., and yet it's remained a single continuity throughout.
